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Related Experiment Videos

The acquisition of observing

J A Dinsmoor, K L Mueller, L T Martin

    Journal of the Experimental Analysis of Behavior
    |November 1, 1982
    PubMed
    Summary
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    Pigeons learned to discriminate stimuli when they were highly noticeable. Discrimination performance was linked to how much time pigeons spent observing the stimuli.

    Area of Science:

    • Behavioral psychology
    • Animal cognition

    Background:

    • Pigeons were trained using a variable-interval schedule of reinforcement.
    • Stimuli were presented only when pigeons interacted with a perch.

    Purpose of the Study:

    • To investigate how stimulus salience affects discrimination learning in pigeons.
    • To explore the relationship between observing time and discrimination accuracy.

    Main Methods:

    • Experiment 1: Used line tilt as a stimulus, manipulating its salience (brightness difference).
    • Experiment 2: Used chamber illumination wavelength as the stimulus dimension.
    • Recorded pigeon behavior, including perch contact and stimulus observation.

    Main Results:

    • High stimulus salience facilitated discrimination acquisition; reduced salience hindered it.

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  • Stimulus disparity magnitude had minimal impact on discrimination.
  • Time spent observing stimuli positively correlated with discrimination accuracy.
  • Pigeons consistently produced the positive stimulus more than the negative one.

    • Conclusions:

    • Stimulus salience is critical for pigeons' discrimination learning.
    • Observing time may be reinforced by the stimuli themselves, aiding discrimination.
    • Discrimination formation is related to changes in observing behavior over time.